ESTAR/MSTAR Diagnostic

Elementary Students in Texas: Algebra Ready (ESTAR) and Middle School Students in Texas: Algebra Ready (MSTAR) Diagnostic Assessment

The ESTAR/MSTAR Diagnostic Assessment, designed to follow the ESTAR/MSTAR Universal Screener, is administered to identify WHY students are struggling with algebra-related core instruction, and provides information that can be used to plan supplemental instruction. 

The 2025-2026 Administration Windows for the ESTAR/MSTAR Diagnostic Assessments have been scheduled as follows:
Fall: August 18 - October 17, 2025
Winter: January 12 - February 13, 2026
Spring: April 20 - May 22, 2026

The ESTAR/MSTAR Diagnostic Assessment can be accessed at https://estarmstar.org.

If you have questions or need assistance related to the Diagnostic Assessment, please contact mathtx@esc13.net.

Professional development resources are available at texasmathsupportcenter.org.